My Samsung Galaxy S4 was at 30% battery when I put it on the charger. 10 minutes later, it was at 25%. I now have no battery life, and when I put it on the charger, the only thing that happens is a series of ongoing vibrations. I got the phone around February 2014, and I am on Verizon. I have tried all the classic techniques: changing the USB cable, using another charger, taking out the battery and putting it back in, and even letting it sit on the charger for 45 minutes undisturbed. None of those worked. I checked Youtube videos, other posts, and basically any other suggestion that I can find, but to no avail. Please help me with this problem! I am a high school junior, and many of my essays and classmate contact information is on my phone, so it's extremely difficult to have it be broken! Thank you in advance!